读写锁不能这么用。。。

rwlock.go

func (bus *EventBus) find(register *Register) int {
	bus.registersLock.RLock()
	defer bus.registersLock.RUnlock()
	for i := 0; i < len(bus.registers); i++ {
		if bus.registers[i] == register {
			return i
		}
	}
	return -1
}

func (bus *EventBus) remove(i int) {
	bus.registersLock.Lock()
	defer bus.registersLock.Unlock()
	bus.registers = append(bus.registers[:i], bus.registers[i+1:]...)
}

func (bus *EventBus) Remove(register *Register) {
	i := bus.find(register)
	if i != -1 {
		bus.remove(i)
	}
}